{% extends 'layout.html' %}
{% load static %}

{% block content %}

    <div class="container">

        <div class="panel panel-default">
            <div class="panel-heading">
                <h3 class="panel-title">折线图</h3>
            </div>
            <div class="panel-body">
                <div id="m1" style="width: 100%;height:300px;"></div>
            </div>
        </div>

        <div class="row">
            <div class="col-sm-8">
                <div class="panel panel-default">
                    <div class="panel-heading">
                        <h3 class="panel-title">柱状图</h3>
                    </div>
                    <div class="panel-body">
                        <div id="m2" style="width: 100%;height:400px;"></div>
                    </div>
                </div>
            </div>

            <div class="col-sm-4">
                <div class="panel panel-default">
                    <div class="panel-heading">
                        <h3 class="panel-title">饼图</h3>
                    </div>
                    <div class="panel-body">
                        <div id="m3" style="width: 100%;height:400px;"></div>
                    </div>
                </div>
            </div>
        </div>
    </div>

{% endblock %}

{% block js %}
    <script src="{% static 'js/echarts.js' %}"></script>
    <script type="text/javascript">

        $(function () {
            initBar();
            initPie();
            initLine()
        });


        /**
         * 折线图
         * */
        function initLine() {
            var chartDom = document.getElementById('m1');
            var myChart = echarts.init(chartDom);
            var option = {
                xAxis: {
                    type: 'category',
                    data: []
                },
                yAxis: {
                    type: 'value'
                },
                series: [
                    {
                        data: [],
                        type: 'line'
                    }
                ]
            };

            $.ajax({
                url: "/chart/line/",
                type: "get",
                dataType: "JSON",
                success: function (res) {
                    option.xAxis.data = res.week_list;
                    option.series[0].data = res.series_list;

                    option && myChart.setOption(option);
                }

            })
        }

        /***
         * 初始化柱状图
         * */
        function initBar() {
            // 基于准备好的dom，初始化echarts实例
            var myChart = echarts.init(document.getElementById('m2'));

            // 指定图表的配置项和数据
            var option = {
                title: {
                    text: '2022年四季度的销量',
                    textStyle: {
                        color: 'red',
                    },
                    subtext: "天航",
                    subtextStyle: {
                        color: '#659454',
                        fontSize: 14,
                        fontStyle: "italic"
                    },
                    left: "50%",
                    textAlign: "center",
                },
                tooltip: {},
                legend: {
                    data: [],   // 后台获取
                    bottom: 0,
                },
                xAxis: {
                    data: []    // 后台获取
                },
                yAxis: {},
                series: []      // 后台获取
            };

            // 向后台发送请求数据
            $.ajax({
                url: "/chart/bar/",
                type: "get",
                dataType: "JSON",
                success: function (res) {
                    if (res.status) {
                        // 获取到数据 将返回的数据更新到option中
                        option.legend.data = res.data.legend;
                        option.series = res.data.series_list;
                        option.xAxis.data = res.data.x_axis;

                        // 使用刚指定的配置项和数据显示图表。
                        myChart.setOption(option);
                    }
                }
            });
        }

        /**
         * 初始化饼图
         * */
        function initPie() {
            var chartDom = document.getElementById('m3');
            var myChart = echarts.init(chartDom);

            var option = {
                title: {
                    text: '2022年各品销售件',
                    subtext: '天航',
                    left: 'center'
                },
                tooltip: {
                    trigger: 'item'
                },
                legend: {
                    orient: 'horizontal',
                    left: 'left',
                    bottom: "0%",
                },
                series: [
                    {
                        name: '服装占比',
                        type: 'pie',
                        radius: '50%',
                        data: [],
                        emphasis: {
                            itemStyle: {
                                shadowBlur: 10,
                                shadowOffsetX: 0,
                                shadowColor: 'rgba(0, 0, 0, 0.5)'
                            }
                        }
                    }
                ]
            };

            $.ajax({
                url: "/chart/pie/",
                type: "get",
                dataType: "JSON",
                success: function (res) {
                    if (res.status) {
                        // 获取到数据 将返回的数据更新到option中
                        option.series[0].data = res.data
                        // 使用刚指定的配置项和数据显示图表。
                        {#myChart.setOption(option);#}
                        option && myChart.setOption(option);
                    }
                }
            });
        }
    </script>
{% endblock %}